Deniz Doğan Mehmet (born 19 September 1992) is a professional footballer who plays as a goalkeeper for club Dunfermline Athletic. A former youth team player at Arsenal, Charlton Athletic, Manchester United, and West Ham United, Mehmet then signed for Welling United for a brief spell in 2011. Having represented Turkey up to under-19 level, English-born Mehmet then spent four years in Turkey as a reserve goalkeeper at Kayserispor. Mehmet then signed for Scottish club Falkirk in January 2016, where he stayed for one year. Mehmet then returned to England to sign for Port Vale in March 2017, before signing for Dundee United later that same year. He joined Queen of the South in March 2019, before returning to Dundee United four months later. He sat on the bench as United won the Scottish Championship in the 2019–20 season. He joined Dunfermline Athletic in June 2021. Early life Mehmet was born in Enfield, London, on 19 September 1992 and he is of Turkish Cypriot descent. Club career Mehmet was associated with the youth academies at Arsenal, Charlton Athletic, and Manchester United, before he joined the youth academy at West Ham United in 2008. Mehmet departed West Ham in the 2011 close season and had trials with Ipswich Town and Wycombe Wanderers that summer. He then signed for Welling United of the Conference South. Mehmet departed Welling to sign for Turkish Süper Lig club Kayserispor. He departed the Turkish club in January 2015, having played ten cup matches in four seasons. Mehmet then had trials with Luton Town and Leyton Orient in the 2015 close season and then went on to have a trial with Plymouth Argyle in October 2015 and featured for the club in the Under-21 Premier League Cup. He then signed for Scottish Championship club Falkirk in January 2016 after a one-month trial. Mehmet was unable to replace first-choice goalkeeper Danny Rogers and departed the club by mutual consent in January 2017, after informing manager Peter Houston that he wanted to play regular matches elsewhere. Mehmet then signed a short-term contract with EFL League One club Port Vale on 1 March 2017, with the intention of being the back-up to on loan goalkeeper Leo Fasan. Mehmet debuted for Port Vale in a crucial 2–1 win versus relegation rivals Shrewsbury Town at Vale Park on 17 March 2017. One week later, he impressed in a 0–0 home draw versus Milton